foc
《中国植物志》英文修订版
Flora of China
  FOC Vol.19 (2011)              | Family List  Dipsacaceae  PDF Pterocephalus  PDF   |  eFloras.org Link Font:+ Big | - Small
   2. Pterocephalus  Vaillant ex Adanson Fam. Pl. 2: 152, 595. 1763.
翼首花属   yi shou hua shu
  

  

Herbs, perennial or annual, or sometimes subshrubs. Leaves basal, rosulate, entire, pinnatifid to pinnatisect. Capitula solitary, terminal; involucre of 2, rarely 3 whorls of 4-6 involucral bracts; receptacles covered with hirsute hairs or bracts; involucel 1, 4-8-ribbed, apex obscurely dentate, or corona-like, or membranous and dentate. Calyx segmented and 8-24-setose or pinnate. Corolla 4- or 5-lobed, that of central flowers nearly actinomorphic, that of marginal flowers nearly 2-lipped; upper lip with 1 lobe, entire or 2-lobed; lower lip usually 3-lobed. Stamens 4, rarely 2 or 3, inserted at upper part of corolla, exserted. Ovary inferior, enveloped by involucels. Achenes smooth or ribbed. Seeds with a large, straight embryo and scanty endosperm.

About 25 species: from the Mediterranean to C Asia and tropical Africa; two species (one endemic) in China.

  
1Leaves spatulate or linear-spatulate, entire or narrowly segmented; inflorescences globose in fruit; involucral bracts of outer layer narrowly ovate; persistent calyx segmented into 20 pinnate hairs; corolla 5-lobed, obovoid, 4-5 mm.1  P. hookeri    匙叶翼首花
+Leaves oblong-lanceolate or oblanceolate, pinnatifid to bipinnatisect; inflorescences compressed globose in fruit; involucral bracts of outer layer lanceolate; persistent calyx segmented into 8 brown setae; corolla 4-lobed.2  P. bretschneideri    裂叶翼首花
   
   Lower Taxon
  • Pterocephalus bretschneideri  (Batalin) Pritzel ex Diels  裂叶翼首花
  • Pterocephalus hookeri  (C. B. Clarke) E. Pritzel  匙叶翼首花